Fire extinguisher



E. F. DELFOE FIRE EXTINGUISHER July 3l; 1928.

Filed oct. 28, 1922 2 sheets-,sheet 1 July 3l, 14928.

1,679,207 E. F. DELFOE FIRE EXTINGUISHER Filed oct. 28, 1922 2 sheets-sheet 2 Patented July 31', 192s.

UNITED stares Enwiian patron, oF BROOKLYN, NEW YORK AIEIIRI'E EXTINGUISHER.

Application [filed `October -28, 192,2. Serial No. 597,432.

My invention Arelates Ito iire extinguishers and has for its `object the `provision of an improved device of this character. More especially, my invention yhas reference 1to an improved extinguisher 4,for `portable use v and particularly v-to hand operated devices where in fire extinguishing'iluidis housed, alsoithe provision of lnovel ,means `:for `spraying" the ire .with `the-contents.

Another object of my invention is ,to providey .a fire .extinguisher or container 1that will be 'cheap and ,duBableeasy to `manufacture and use, andione `that may beeajsily operated. An extinguisher that Ewill hold the ire'quenching fluid without ffear of lealtage, corroding or otherwise ybecoming deectiveby evaporation For other means.

lYet another obj ectof any :invention is-to be -able to `hold-the container with one hand while operating a 'continuous :flow of the fluid -with the other, whereby ,the stream will be directed tothe immediate flame.

lith ,the foregoing and other :objects in view, `further objects and lIadvantages will appear as the description of the invention is hereinafter developed.

Referring to the drawings `whereinis illustrated what isnow considered :t0 be the preferred .form of myinvention;

Fig. lis alongitudinal section lof myextiuguisher Fig. 2 a top view of one offthe dise plates;

Fig. 3 a detached detailof tlie.spring's;lock 'for the :handle .when lnot j in any operative position; f t

Fig. 4 adetail ot a `modified form,.show ing the seal vfor :the nozzle;

Fig.V 5 a de-tailfofthe piston, showing the valve Atherein Fig. 6 Vshows a yemodifieation of the container shown in Fig. ,11;

'Fig. 7 is another detailimodification ofthe pivoted handle, also :showing the counter shaft and bearing for same; y

,Fig 18 is another modcatonf of a, closure fior the nozzle; I

VFig. 9fis a ltletailfviewshoiwinge locking means for the handle when the same iis infan operative position,and

Fig. 10 is a detail showing ranother means of permitting air to get behind 'thepiston Figure 11 is an enlarged detail view ofmy needle valve. i

In the drawings is illustrated auitable container 1 Which=may bevofithe usualsize and shape for use aboutthehousafaetony *Same* `.end ,a lbevel vgear 25, which ymeshes with a or automobile or other-such places where it may ,be .conveniently placed'forany einer# secured a cap 7 provided centrally thereof with nozzle .8, having a central bore 9. Below tlienozzle is located a head x10, having on its under side a key 11. The head 10 is hollow and kis provided with ay spring actuated Ivalve 12, the contacting face of which is provided .with a vellurnoid, washer ,which inV turn rests on av seat 11i-in the head 1 0 and asuitable spring 15 the lower end ot ywhich irests on .the valve to keep it on its Yseat ,while theother end abuts the under sideff the nozzle, thus providing a secure' liquid tight.valve when the extinguisher is not-'fin use. o

The container being formed of suitable `tubing, provides anvinner Asmooth wall over the face of which rides a piston, that willbe ydescribedfin detail furtheron. Thefbase 2 Aand the cap 7 togetherwith the. tubing comprise the container 1. intermediate the head V., and gthe base, and lCentrally located with respect tothe container,.is a :hollow vertical yzfthreaded shaft 16, its'lower end housed in ,thecentral l,bearing 8, while its `upper reducedpoution 17 is suitably housed in a bear- 18 which as ,above noted is interlocked with ytheihead lO'bythekey 11. interposed between `the head and ;the :bearing are washers 1 9 and 2O so as to provide a leakproof -joint between thetwo parts.

:The hollow .verticalsha'ft 16 at `its lower .en dmay be provided with suitable openings 2 1 and kThese openings connect the-,interiory of'sthe container vwith the interiorl bore 23, of thehollow shaft,an,d rabout these openingsit-ispreferred to plaeea screen24 so as to prevent any cloggingy of the parts, by .freasonotsedimentor other matter, getting through to .the ynozzle where "it .would seri- .ously interfere with the proper workingtot The shaft carries on its upper likegear26 ona small shaftv27, one end of i shaftbeingihoused"in the beariiiglS,

While its. other end extends' ,througha" stuiling .box 28 which also Iacts as a bearing 29 Yfor y;that.end ottheshaft27.v Saidshaftis prolll) (shown in dotted lines) which permits the air to enter the interior of the Lipper part of the container as tl e piston is forced downresponds to and fits the thread of the hollow.

shaft 16, and is adapted to operate up and down the same when the operating lever is turned.V A shoulder supports a safety disk 36 that may be provided as shown with downwardly extending fingers 37, and over which disk is supported a larger cup shaped disk of vellumoid or other suitable material 38. Said latter disk is backed up with another disk 39 in size and shape like the disk 36.` Thus it will be seen that the two disks will cause the vellumoid disk 38 to retain its shape at all times vand thereby fit closely to the walls of the container 1. Above the disk 39 is a ring IO of triangular shape in cross section, and consisting of asbestos composition, which is preferably treated with glycerine` graphite or mica. Said ring is held in position by the disk 89 and another like disk 41, the latter disk having its outer edge or flanges upturned to conform to the upper face of the asbestos ring 40, and by which means said ring is held securely in place. While the several disks described may be provided, as above noted, with fingers 37, yet they will perform the same function with an Vupturned rim such as is shown in Figs. 1 and 5. These several disks are held in place by a washer 42, which in turn is held secure by a nut 43. The body portion 33 of the plunger is also provided with a suitable stuffing boX 44, while 45 is the other member thereof. Thus it will be seen that the construction and arrangement of parts that goto make up the piston forms a moisture proof joint not only between the several disks, but between the upper and lower sides of the piston.

`AThe shaft 27 may have a bifurcated head 46 to which may be suitably hinged a lever 47,I the latter provided with a handle 48, and

`with an insert 49 therein of cork or other suitable material that will form a complete closure When the handle fits over and closes the end of the nozzle 8, while spring clips 56 form means for not only holding the handle-in a non-operative position, but are of sufficient strength to hold said closure insert against the end of the nozzle and prevent any leakage or evaporation.

The herein illustrated rotary type of extinguisher permits the operator to steady the same against his body while holding or pointing the extinguisher in the direction of the blaze-with one hand, and at the same time permits him to use all necessary force to turn the handle to operate the piston with the desired speed to cause a continuous spraying of the blaze with the fluid.

The bearing 29 is providedwith a downl wardly extending portion 51 (see Fig. 7) to which is secured a spring catch 52 having a nose 53, and a projecting portion 54 which when desired may be pressed down so as to permit the handle to be turned in the reverse direction for filling the container. By providingl and locating this spring catch 52 in this position it prevents the handle from being turned in any other than the proper (or counterwclockwise) direction, when it is desired to cause the fluid to flow.

Again referring to Fig. 6, it will be seen that there appears a complete modification of the form shown in Fig. 1. In this form the container is provided with a pipe 55 extending from the lower part 2 of the container to the top, the same being suitably secured to the outside, and fitting within a groove 56 in the cap 57 where said pipe terminates into a central nozzle 58. The cap in this instance has'v depending from its under side a finger or lug 59 which fits the inner bore 23 of the hollow vertical threaded shaft 16, the lower end of said shaft being housed in the base 2 as shown lin Fig. 1. The upper part of said shaft is shown as being provided with a flat disk 6() having teeth 61 about its upper circumference, and into which fits a wheel 62 on the shaft 655, the latter corresponding to the shaft 27 in Fig. 1. The shaft '63 has secured to its outer side a depending portion 64 to which is pivotally hinged the lever 65 the latter having a suitable handle 66 for operating the lever, while its lower end is provided with an aperture 67 so that when it is thrown over the top of the nozzle 58 it will be held secure by the spring clips 50, and the small projections 68 that are on the outer sides of the depending portion 64, while the lever 65 is provided at its pivoted point with corresponding depressions 69, which in no way interfere with the turning up or down of the lever 65, but do form a locking means to hold said handle and lever in one or the other of its positions.

Of course it will be understood that the `handle 66 will be provided with. a sealing means as shown in Fig. 4, wherein is shown a bore 70,- its lower end forming a seat 71 on which is placed a cork or other suitable material 72. v The other end of said bore threaded and has secured therein a screw plug 73. The finger 74 centers a suitable spring 75, so as to afford proper tension of lill) .lofi

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is being returned to its normal or upper position. Sufficient air escaping throughithe shaft 1G so as to allow-of the perfect work- 112 ing of the piston` downward when the -lever 65 is being operated. When uthis form of piston is used.: the double :acting needle valve isnot used, the escaper of the air through the shaft 16 as above noted permits of the v proper working of :the device. f

Again Fig. l0 shows a..modifficationyof the nozzle shown in Fig. '1, with 4the provision of an vair inlet79, which opensat the discharge end .of the nozzle 8, .while the other end Lof said .inlet communicates with the interior of close-up operation is effective, a .slightu'ifling of the nozzle bore ywill have the leffect to ,break the flow of solid liquid discharged therefrom into spray, `thereby Acovering a .much :greater area, and havlng a much bet-- ter flame quenching effect .than aif it were in a solidy stream. By ,having the lever. operated with a rotary motion, there vis no jerky or unsteady directing of the `liquid -in the blaze as is the case with other styles.

Vhile the extinguisher is designedto be held in an upright position, it avilljbe understoodythat the same may if ydesired be held in an inverted position, as the various parts are proof against leakage. Again, the container mayV with its .contents be placed anywhere desired in either position, with every assurance of safety.`

In accordance with the provisions of the patent statutes I have herein described the principal forms of my invention which I now consider to represent the best embodiment thereof, but I desire to have it understood that the various forms are only illustrative and that the invention can be carried out in other ways than those shown and described, but all are intended to come withinthe scope oftherclaims. Also,`whle the designzof `@the .extinguisher Eis rshown in Mari,- ous forms, zit-'may be changed `oraltered to meet lthe particular requirements `without nterfering in .any -way with .the general resultsV for which the extinguisher 'was ldesigned. l. n

.Having described my'invention what .I wish to cover Aby Letters Patent, is:

yl. In a'flre extinguisher lcomprising. a cylindrical body, fthe combination of ,a

ythreaded hollow shaft stherein, ,the linterior of which communicateswith the interior of the cylinder, a .handle operatively associated with the shaft .for `rotating the same, i a piston .mounted on said shaft, and comprising a yliquid proof cup held between metallic plates havin-g yieldable .outer `edges .and ,a triangular Vpacking ring, said piston adapted tomove on said shaftby a rotary ,movement of the klhandle to cause liquid to be forced through the shaft, a nozzle communicating with the hollow shaft, and lmeans in said handlev for closing and Sealing jthe nozzle when the handle is in vinoperativeposition. 'ffi 2. 'In a fire extinguisher `comprising agcylinder having a basesecured toone end, aeap lsecured tothe other fend, .a yhollow -head Iseated in the cap, a hollow vertical threaded shaft the interior, of which communicates with the nteriorof the cylindeig-and which shaft is 'held in position by said base and head, a -piston onsaid shaft having .atscrew threaded hub provided with a. pluralitylQf plates between which is aliquid proof piston i cup, and .a triangular packing fring, means jfor holding the same secure V;to .the piston, a nozzle carried by :the .head communicating `with `thehollow shaft-for directfing .the How of liquid, and a handle to rotate ythe 'hollow shaft for -iforcing A,the piston -in an opposite direction to the `flow of liquid. i f

3. In a rfire extinguisher,comprising a cylindircal body having la base .and .va-cap Lsecured thereto. a hollow head :carried by the fea-p ,fthe latter provided .with -a suitable noz- ;zl'e, a yhollowvertioal threaded shaft having `bearings in .said .head and base and 4communicating with the 'nozzle and .the interior of .the cylindrical body, .said shaft `having ya piston -operable thereon, ,-a transverse `shaft having a hinged lever, power transmission yelements operatively connecting said transverse shaft with said hollow vertically arrangedthreaded shaft whereby said shafts are caused to be actuated simultaneously, the handle of said lever being adapted to fold andV seal the free end of the nozzle when not in an operative position.

4. In a fire extinguisher comprising a cylinder having a base suitably secured thereto, a cap covering the upper end provided with a head and a nozzle carried by the head, a hollow vertical threaded shaft having bearlll() ings in Vsaid base and capV and the interior of which communicates with the interior of the cylinder and nozzle, a piston'movable on said shaft to force liquid from the cylinder therethrough to the nozzle, and having a hub operable upon said shaft, disks mounted on said hub having outwardly flaring fingers holding secure a liquid cup and between others a triangular packing ring, means for locking the several parts in position to prevent leakage about their edges, a transverse sha-ft having a hinged lever, the handle of which is adapted to fold over and seal the free end of the nozzle when not in an operative position, and power transmission elements operatively connecting said transverse shaft with said hollow vertically arranged threaded shaft whereby said shafts are caused to be' actuated simultaneously.

5. In a fire extinguisher comprising a cylinder provided with closures at its upper and lower ends, said upper end closure constituting a cap, a head formed on said cap, a hollow threaded shaft, the interiorv of which communicates with the interior of the cylinder operably supported in bearings at its upper and lower ends, a bearing block carried by said shaft, said block held in position by the head which forms part of the cap, the latter provided with a nozzle that has communication with the hollow shaft, a piston on said shaft, a handle for operating said shaft and piston and said handle operatively associated with said threaded shaft and provided with a suitable yielding closure which when in an inoperative position of the handle acts as a seal to the nozzle.

6. In a fire extinguisher comprising a cylinder provided with sealed closures at the upper and lower ends, a head, a nozzle carried by the head, a hollow shaft having openings communicating with the interior of the container and nozzle, a bearing block carried by said' shaft interlocking with the head, a transverse shaft, ra lever hinged to said transverse shaft provided with means for sealing the free end of the nozzle when in an inoperative position, and provided with means for imparting a rotary motion to the shaft when in its extended position, and a piston carried by said hollow shaft adapted to force the liquid within the container through the hollow shaft and nozzle.

7 In a lire extinguisher of the character described, the Acombination of a container provided with a cap, a vnozzle carried by the cap, a base Ywith a tillingpport, a hollow vertical shaft the interior of which communicates with the interior of the cylinder and with the nozzle, means forroperatively holding said hollow vertical threaded shaft, a piston on said shaft, a Vtransverse shaft, gears connecting both shafts, a hinged lever mounted on said transverse shaft, a handle carried by the same, said lever and handle adapted to be locked in a non-operative position, the handle having therein yieldable packing means for sealing completely the opening in the nozzle carried by the cap of the container, and means whereby when in an operative position the handle may only be operated in one direction to cause the VeX- tinguisher to discharge its contents.

8. In a fire extinguisher of the character described, the combination of a container, a nozzle, means for operatively vholding in said container a hollow vertical threaded shaft, channels between the interior of the shaft and the container and the nozzle, a piston on said shaft having metallic and composition disks, a triangular packing ring carried by said metallic disks, a hinged lever, and a handle carried therewith for revolving said hollow shaft, said handle adapted to be snapped under spring clips when in an inoperative position to retain same, and means in said handle for closing and sealing the nozzle when the handle is 1n an inoperative position.

9. In combination, a container having a nozzle, a hollow rotatable vertical shaft suitably held therein and the interior of which communicates with the interior of the container and the nozzle, a piston carried by said vertical shaft and movable upon rotation thereof to force the liquid in an opposite direction to its movement, means for revolving the hollow shaft, and a handle swingably mounted on said-means, said handle adapted to be moved to one position above said container and engaging upon said nozzle to close the same, and to another position alongside of said container for manual operation to rotate said means.

In testimony whereof I have ax'ed my signature. f

. EDWARD F. DELFOE. 

